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Finding the Fourth Proportional to 359,391.79, 495,931.57 and 206,381.17

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Solution

The fourth proportional to 359,391.79, 495,931.57 and 206,381.17 is: 284,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,391.79 : 495,931.57 = 206,381.17 : x
  2. Step 2: Convert to fraction form
    359,391.79/495,931.57 = 206,381.17/x
  3. Step 3: Cross multiply
    359,391.79x = 495,931.57 × 206,381.17
  4. Step 4: Simplify right side
    359,391.79x = 102,350,937,656.54
  5. Step 5: Solve for x
    x = 102,350,937,656.54/359,391.79
  6. Step 6: Final answer
    x = 284,789.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.